[Bug 1961305] [NEW] Cannot boot into Xen dom0

[Thomas Walther]

Public bug reported:

Description:	Ubuntu 20.04.3 LTS
Release:	20.04

The linux-generic-hwe-20.04 5.13 Kernels are compiled with

#CONFIG_KERNEL_GZIP is not set
CONFIG_KERNEL_ZSTD=y

preventing Xen 4.13.x / 4.14.x from booting into Dom0. After compiling
the kernel by myself using

CONFIG_KERNEL_GZIP=y
#CONFIG_KERNEL_ZSTD is not set

it works as expected. Kernel boots and Xen is working as intended.
Please revert to CONFIG_KERNEL_GZIP=y like in the former HWE (5.11?)
series not having this problem.

Thank you

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1961305

Title:
  Cannot boot into Xen dom0

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  Description:	Ubuntu 20.04.3 LTS
  Release:	20.04

  The linux-generic-hwe-20.04 5.13 Kernels are compiled with

  #CONFIG_KERNEL_GZIP is not set
  CONFIG_KERNEL_ZSTD=y

  preventing Xen 4.13.x / 4.14.x from booting into Dom0. After compiling
  the kernel by myself using

  CONFIG_KERNEL_GZIP=y
  #CONFIG_KERNEL_ZSTD is not set

  it works as expected. Kernel boots and Xen is working as intended.
  Please revert to CONFIG_KERNEL_GZIP=y like in the former HWE (5.11?)
  series not having this problem.

  Thank you

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